locus

noun
🔊/ˈləʊkəs/
🔊/ˈləʊkəs/
(plural loci
🔊/ˈləʊkaɪ/, 🔊/ˈləʊsaɪ/
🔊/ˈləʊkaɪ/, 🔊/ˈləʊsaɪ/
)
(specialist or formal)
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  1. the exact place where something happens or that is thought to be the centre of something(某事发生的)确切地点;(被视为某物的)中心,核心
    Word Originearly 18th cent.: from Latin, ‘place’.